Pump for exhaust-steam and feed-water.



W. 'I'. HARRIS. PUMP EOE EXHAUST STEAM AND EEED WATER.

APPLIUATION FILED JUNE 24, 19'7.

Patented Mar. 23, 1909.

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y W. T; HARRIS.

PUMP PoR EXHAUST STEAM AND EEED WATER. APPLIOAIION FILED JUNE 24, 1907.916,309.V Patented Mar. 23, 1909.

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UNITED STATES "PATENT OFFICE.

PUMP .fEORiEXI-IIIS T-.STEAM .AND FEED-WATER.

To allwl/omfit' may .concerns lBe itknown thatLI, `WILLIAM T JHARRIs,a

.citizen oi'y the'lUnited States, residing atfLouisville, in thefcountyof AJefferson-andStateol invention.

`Figure 1 is. an axial section of a pump embodying f my invention .andprovided with a Ysteam engine vfor operating the same;.Fig. 42 .is asection online 2-201' Fig. 1, and Fig lan elevation zof the ypump,.mechanically driven.

In .the drawings, indicatesapump cylinder having a ,piston 111 .mountedtherein, therod 12 .oil saidpiston extending through the heads of thecylinder, through desirable Arranged Yin :alinement With cylinder 10'isa smaller cylinder .14.having apiston15carried`by the extended rod 12.The cylinder Y1;1.is.provided .with suitable inlet'valves 16Whichcommunicate with a pipe ,17 .leadingfrom the .Water tank, and withsuitable outlet valves .18 Whichlead .to an eduction pipe 19. Ripe 19delivers to a `passage 20 Which leads to appair of nozzles21 and. 22which are` directedtoward.inlet valves Y 23 and 24, respectively,.iorthev opposite ends of cylinder 10, the saidnozzles 21and .22

to the eduction pipe 28 which leads to the boiler.

steam engine 30, as shown in Fig. 1. the piston rod 12 is driven by thesteam eni gine, as shown, I prefer to exhaust said engine through a pipe31 which delivers to an aspirating nozzle 32 arranged in the Watersupply pipe 17. The engine 30 may be driven by exhaust steam from thelocomotive.

ASp.eclE-lcaton' of Letters Patent.

n 2 .the other .pump and placedtode The piston rod 12 may bereciprocat-ed by, means of an eccentric, Aor other mechanicall drivingtrain, ormay'bedriven bymeans of ay Then Patented March.23, 11909.

In operation: reciprocation of thepiston rod 12 lWill cause piston '15to draw Water from `pipe V17 .into cylinder :14 .and 'to 'dis- .clLargethe .same throughvalves 18 i. and Vpipe 19 tonozzles`21.and 22. 'Theexhaust steam from y.theengineis delivered to chamber throughpipe26anda-.stream of Water Willv be directed by said nozzles against the inletvalves 23 and 2,4, Vand zacting against that valve .Whichis freetobemoved'by reason of the particular direction of movement ofthe.piston'1.1, Will have an :aspiratingr eiiiect upon the exhaust steam in.chamber 25 and -Will draw said .exhaust steam .into cylinder '10`lromtwhence `it is ejected through valves 27 to the boiler28. Theexhauststeam from the Aengine is also saved 'by passing into Vthe Waterstreamgoing ithroughpipe `1'7.

In orderltoavoid the useoi' springs lepreiertoarrange.thepiston rod 12vertically, as shown in the drawings, this arrangement making the aXesoi the various valves'vertical. lViththisfarrangement, and' in order toproperly'equalize:the loW from the nozzles 21and22 I deem itadvisable-to .make the nozzle21 somewhat smaller than .the nozzle42.2.so that there will be a suihcientrestrietion .to produceanequaliiowirom the tWonozzles. .The Water cannot accumulate yin the.lowerpart o1 Vchamber2`5 to anygreat extent because-.it Willbe drawn intothe cylinder 1() .by the action of piston 11. It Willbenoticed that,when the engine 30 is driven by exhaust steam, .no energy (beyond ythatused ordinarily)iis drawn Vfrom theiboiler andnthat there vissuchainixture oi'exhaust steam and vfeed- Waterthat theieed Wateris'heate'd to a high degree before entering theboiler.

I claim as my invention:

1. The combination of a pair of pumps, `eachhsWingsuitablelinlet andoutlet valves, a supply pipe leading'into one of saidpumps, adischargepipe leading from said pump into iver .a jet `directlyagainstthei inlet valves ofsaid other pump'in suchmanner as to .tend toopensaid valves,. a dischargegpipe'for said othergpump, and a vaporsupply pipe leading to the inlet valves of said other pump.

2. rThe combination of a air of pumps, each having suitable inlet and)outlet valves, a supply pipe leading into one of said pumps, a dischargepipe leading from said pump into the inlet chamber of the other pump,aspirating nozzles placed at the discharge end of said discharge pipeand close to the inlet Valves of said other pump. in such mannerV thatloW from said nozzles Will operate against said valves to open the same,a discharo'e pipe for said other pump, and a vapor supptly pipe leadingto the inlet Valves of said other pump.

3. ln an apparatus of the class described, the combination of a pair ofpumps, one discharging into the other, a supply pipe for one of saidpumps, a discharge pipe leading from said pump to the other pump, adischarge pipe for said other pump, a Vapor supply pipe also leadinginto said other pump, a steam engine for operating said pumps, and anexhaust pipe leading from said steam engine and delivering` into thesupply pipe oi' the first pump through an aspirating nozzle.

l. rlhe combination of a pair of pumps, each having suitable inlet andoutlet Valves, a supply pipe leading into one of said pumps, a dischargepipe leading from said pump and delivering against the inlet Valves ofthe other oi said pumps through aspirating nozzles, a discharge pipe forsaid other pump, a Vapor supply pipe leading to the inlet valves ol saidother pump, a steam engine for operating said pumps, and an exhaust pipeleading from said steam engine and delivering into the supply pipe elthe iirst pumpthrough an aspirating nozzle.

5. rlhe combination, lwith a pair of 'pump cylinders, one smaller thanthe other and arranged in tandem, a piston rod passing through saidcylinders and carrying a pair ol?l pistons fitting the two cylinders,inlet and outlet valves for the smaller cylinder, inlet valves for thelarger cylinder, outlet valves therefor, a supply pipe for the smallercylinder, a discharge pipe leading from the smaller cylinder, adischarge pi )e leading` from the larger' cylinder to the in et Valvechamber of the larger cylinder and a Vapor supply pipe leading into theinlet Valve chamber of said larger' cylinder.

6. rl`he combination, With a pair of pump cylinders, one smaller thanthe other and arranged in tandem., a piston rod passing through saidcylinders and carrying a pair of pistons fitting the two cylinders,inlet and outlet valves for the smaller cylinder, a pair of inlet valvesfor the larger cylinder, outlet Valves therefor, a supply pipe for thesmaller cylinder, a discharge pipe leading from the smaller cylinder tothe inlet valve chamber of the larger cylinder, a discharge pipe leadingfrom the larger cylinder and a vapor supply pipe leading into the inletValve chamber of said larger cylinder.

7. The combination With a pair oli' pump cylinders, one smaller than theother and arranged in tandem, a piston rod passing through saidcylinders and carrying a pair of pistons litting the two cylinders,inlet and outlet Valves for the smaller cylinder, inlet valves for thelarger cylinder, outlet Valves therefor, a supply pipe for the smaller'cylinder, a discharge pipe leading from the smaller cylinder to a pairof aspirating nezzles arranged Within the inlet Valve chamber ol' thelarger' cylinder, a discharge pipe leading from the larger cylinder anda Vapor supply pipe leading into the inlet Valve chamber of said larger'cylinder'.

8. rlhe combination, with a pair ol pump cylinders, one smaller than theother and arranged in tandem, a piston rod passing through saidcylinders and carrying a pair of pistons 'fitting the two cylinders,inlet and outlet valves for the smaller cylinder, inlet valves for thelarger cylinder, outlet Valves therefor, a supply pipe for the smallercylinder, a discharge pipe leading from the smaller cylinder' to aninlet Valve chamber of the larger cylinder and directed toward the saidinlet valves, a discharge pipe leading from the larger cylinder and avapor supply lpipe leading into the inlet Valve chamber ol? said largercylinder.

The combination, with a pair of pump cylinders, ene smaller than theother and arranged in tandem, a piston rod passing through saidcylinders and carrying a pair oi pistons fitting the tufo cylinders,inlet and outlet valves for the smaller cylinder, inlet Valves for thelarger cylinder, outlet valves therefor, a supply pipe lor the smallercylinder, a discharge pipe leading from the smaller cylinder to a pairof aspirating nozzles arranged Within the inlet Valve chamber oi thelarger cylinder, a discharge pipe leading [from the larger cylinder, avaporsup'ply pipe leading into the inlet valve chamber olg said largercylinder; and a steam engine connected to the piston rod ier operatingsame.

in Witness whereof, l have hereunto set my hand and seal atlndianapolis, indiana, this twenty-first day oi June, A. l). onethousand nine hundred and seven.

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